fossil fuel

noun

: a fuel (such as coal, oil, or natural gas) formed in the earth from plant or animal remains
fossil-fueled adjective

Examples of fossil fuel in a Sentence

oil and other fossil fuels
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That process will produce gas that is nearly chemically identical to the natural gas that comes from fossil fuels. Noelle Phillips, Denver Post, 7 Dec. 2025 But countries failed to agree to a roadmap away from fossil fuels, and there were no explicit commitments on deforestation or funding pledges. Helen Regan, CNN Money, 6 Dec. 2025 Doing so, the letter said, would help signatories accelerate their ability to phase out fossil fuels, facilitate a just and effective clean energy transition, improve transparency and accountability, and bolster business resilience, particularly in vulnerable regions. Jasmin Malik Chua, Sourcing Journal, 5 Dec. 2025 His reconstruction drive intends to normalize this political reality and the pursuit of unrestrained, rapacious fossil fuel extractivism when climate change is intensifying. Nabil Salih, Time, 4 Dec. 2025 See All Example Sentences for fossil fuel

Word History

First Known Use

1759, in the meaning defined above

Time Traveler
The first known use of fossil fuel was in 1759

Browse Nearby Words

Cite this Entry

“Fossil fuel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fossil%20fuel. Accessed 11 Dec. 2025.

Kids Definition

fossil fuel

noun
: a fuel (as coal, oil, or natural gas) that is formed in the earth from plant or animal remains

More from Merriam-Webster on fossil fuel

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!